Can someone help me translate:

"For my beautiful swan" 

into Italian?  I wish to have this inscribed on a gift to my girlfriend.  

Thanks in advance.

Hello.

I'd go with:

"Per la mia bella cigna."

per = for
la mia bella = my beautiful
cigna = female swan

References:
"per la mia bella"
://www.google.com/search?hl=en&lr=&q=%22per+la+mia+bella%22&btnG=Search
"cigna"
http://www.martegani.it/images/tematiche/cigno/oriz16.htm

---------
search strategy:
"per la mia bella"

I hope this helps.

First I would like to say thanks for the answer.  But more than that,
thanks for taking an interest in the 'intangibles' with regards to
literal vs. 'most appropriate' translations.  Your reasoning is in
line with my own, and that makes me feel better about the translation.

As a non-native English speaker, there is not much I could say over
the perfect and literal translation. But if I am allowed to give a
small suggestion over the topic (just because I come from Italy) the
word "cigna" is rarely used in the italian language: personally I can
say this is the first time I read that word, as the masculine form is
preferred: "cigno".

The right phrase, in the end, would be: "Per il mio bel cigno"

I appreciate your comment, bubbles_six, but cigno is clearly
masculine.  Here, we run into one of the pitfalls of translation.  For
a man to refer to his girlfriend as masculine seems inappropriate. 
Cigna (though obviously rare) seems more appropriate where the swan in
question is obviously feminine, as in the example cited where a mother
swan is swimming with her offspring:
http://www.martegani.it/images/tematiche/cigno/oriz16.htm

Here's another example of the use of the "cigna" (when discussing the
"wife" of a "cigno"):
http://www.dsgozzolisanti.it/L'albero/2000/Lug_Ago/cigni.htm

rotormunky:
Thank you for the tip.
-juggler